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POHow to set a MenuItem's IsChecked property for a child of type Enum via XAML?
 

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  1. POHow to set a MenuItem's IsChecked property for a child of type Enum via XAML?
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    <p>I've bound a MenuItem to a Enum using <a href="https://stackoverflow.com/questions/3807724">this solution</a>. </p> <p>The Enum Values are displayed correctly, yet I cannot seem to set a default checked value for the MenuItem's children items. </p> <p>Alternatively put, I would like the MenuItem to have one of its children items (the values of the enum I'm using) checked per default.</p> <p>I've tried the following code, using a Style and a triggered Setter :</p> <pre><code>&lt;ContextMenu&gt; &lt;MenuItem Header="Some Setting" Name="SomeSettingMenu" DataContext="{Binding}" ItemsSource="{Binding Source={StaticResource DisplayTypeValues}}" Click="SomeSettingClicked"&gt; &lt;MenuItem.ItemContainerStyle&gt; &lt;Style TargetType="MenuItem"&gt; &lt;Setter Property="MenuItem.IsCheckable" Value="True"/&gt; &lt;Style.Triggers&gt; &lt;Trigger Property="MenuItem.Header" Value="enums:AnEnum.ItemA" &gt; &lt;Setter Property="MenuItem.IsChecked" Value="True"/&gt; &lt;/Trigger&gt; &lt;/Style.Triggers&gt; &lt;/Style&gt; &lt;/MenuItem.ItemContainerStyle&gt; &lt;/MenuItem&gt; &lt;/ContextMenu&gt; </code></pre> <p>The enum contains values such as ItemA, I've also tried <code>AnEnum.First</code> or <code>0</code> in the Trigger Value attribute (as <a href="https://stackoverflow.com/questions/1165402/question-on-initial-value-of-an-enum-c">answered here</a>), to no avail.</p> <p>Would a <code>DataTrigger</code> be advisable ? If so, how can I write that in XAML ? Or should I use an <code>DataTemplate</code> within an <code>ItemTemplate</code> for the <code>MenuItem</code> ?</p> <p>I've also tried fiddling around in code-behind with <code>SomeSetting.Items</code> -related methods, yet most of the properties (such as Current) are read-only. </p> <p>I am aware that you can write <code>SomeSettingMenu.ItemsSource = Enum.GetValues(typeof(....))</code> in code-behind, but yet again I don't know how to select an Item within the MenuItem programmatically.</p> <p>I've also tried this code, doesn't work as well :</p> <pre><code>&lt;Style.Triggers&gt; &lt;DataTrigger Binding="{Binding Path=Header}" Value="enums:DisplayType.ItemA"&gt; &lt;Setter Property="IsChecked" Value="True" /&gt; &lt;/DataTrigger&gt; &lt;/Style.Triggers&gt; </code></pre> <p><code>enums</code> is a namespace from a different assembly I'm using.</p> <p>Any thoughts would be appreciated, thank you in advance !</p>
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    1. COI've found this article (http://neilmosafi.blogspot.com/2007/08/feb-07-using-combobox-to-select-enum.html) yet when I try to adapt it for my MenuItem a nice looking Exception is thrown. Any thoughts ?
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